Vespa PX 2011 150cc + Sip Road, Is Jetting Necessary?

Hello everybody!

I own a Vespa PX 2011 150cc and I am thinking to put the Sip Road exhaust http://www.sip-scootershop.com/en/products/racing+exhaust+sip+road+20+_24166200. I want to ask you if it is necessary to alter the jetting, as I am thinking not to do so at first, and keep the original jetting. What do you think?

Thanks!

you should definitely go to a bigger jet. i have a 2005 genuine stella (a.k.a. LML star) that had a sito+ and i went from a 100 main jet to a 106 main jet when i switched to the sip road.

Hi, you do need all this stuff (very important, otherwise you risk seizing!):

 

http://www.sip-scootershop.com/en/products/~/products/main+air+correction+jet+si+_58274000

 

http://www.sip-scootershop.com/en/products/mixer+tube+dellorto+be3+_40406000

 

http://www.sip-scootershop.com/en/products/~/products/jet+si+dellorto+105+_40261050

 

http://www.sip-scootershop.com/en/products/idle+jet+si+dellorto+50160_40265016

 

http://www.sip-scootershop.com/en/products/throttle+slide+dellorto+01+_68230100

 

Have fun [;)]